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CN113815407B - Power transmission system and vehicle - Google Patents

Power transmission system and vehicle Download PDF

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Publication number
CN113815407B
CN113815407B CN202110963632.8A CN202110963632A CN113815407B CN 113815407 B CN113815407 B CN 113815407B CN 202110963632 A CN202110963632 A CN 202110963632A CN 113815407 B CN113815407 B CN 113815407B
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CN
China
Prior art keywords
gear
shaft
sun gear
transmission shaft
synchronizer
Prior art date
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Active
Application number
CN202110963632.8A
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Chinese (zh)
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CN113815407A (en
Inventor
聂少文
薛龙
付丽
吴锦
张未
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Dongfeng Motor Group Co Ltd
Original Assignee
Dongfeng Motor Group Co Ltd
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Priority to CN202110963632.8A priority Critical patent/CN113815407B/en
Publication of CN113815407A publication Critical patent/CN113815407A/en
Application granted granted Critical
Publication of CN113815407B publication Critical patent/CN113815407B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/52—Driving a plurality of drive axles, e.g. four-wheel drive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

The invention discloses a power transmission system and a vehicle, and belongs to the technical field of vehicles. The drivetrain includes: the first combining teeth are fixedly arranged on the frame; the engine driving device can be connected with the planetary reduction device, and the planetary reduction device is connected with the sun gear device; the sun gear device can be connected with the intermediate shaft device, and the intermediate shaft device is connected with the front wheel; the motor driving device can be selectively connected with the first combining tooth or the sun gear device through the first synchronizer; the planetary reduction device and the motor driving device are connected with the transmission shaft device; the drive shaft assembly may be coupled to the rear wheel. The power transmission system and the vehicle can independently realize front drive, rear drive and four-drive, and can realize switching of driving modes in the running process.

Description

Power transmission system and vehicle
Technical Field
The invention relates to the technical field of vehicles, in particular to a power transmission system and a vehicle.
Background
Along with the increasingly stringent requirements of energy conservation and emission reduction, the automobile industry faces serious tests as a large household of energy consumption. Hybrid electric vehicles with environmental protection advantages are the research focus of industries and related institutions, and each enterprise institution continuously pushes out respective hybrid power systems. However, the user's power requirements are not reduced. Therefore, it is necessary to develop a hybrid four-wheel drive system to meet environmental and power requirements.
In the existing time-sharing four-wheel drive vehicle, a transfer case is switched on or off to change a two-wheel drive mode or a four-wheel drive mode, a vehicle has to be stopped to switch the drive mode, and the vehicle can only be switched between the four-wheel drive mode and the front-wheel drive mode. In addition, part of the structure is complex, and the operation is complex.
Disclosure of Invention
The invention provides a power transmission system and a vehicle, which solve or partially solve the technical problems that in the prior art, a time-sharing four-wheel drive vehicle changes a two-wheel drive mode or a four-wheel drive mode by switching on or off a transfer case, the driving mode can be switched only by stopping, and the driving mode can be switched between a four-wheel drive mode and a front-wheel drive mode.
In order to solve the above technical problems, the present invention provides a power transmission system comprising: the device comprises an engine driving device, a motor driving device, a planetary reduction device, a first combination gear, a first synchronizer, a sun gear device, a middle shaft device, a front wheel, a transmission shaft device and a rear wheel; the first combining teeth are fixedly arranged on the frame; the engine driving device can be connected with the planetary reduction device, and the planetary reduction device is connected with the sun gear device; the sun gear device can be connected with the intermediate shaft device, and the intermediate shaft device is connected with the front wheel; the motor driving device can be selectively connected with the first combining tooth or the sun gear device through the first synchronizer; the planetary reduction device and the motor driving device are connected with the transmission shaft device; the drive shaft assembly may be coupled to the rear wheel.
Further, the engine driving device includes: an engine and a first clutch; the engine is connectable with the planetary reduction device through the first clutch.
Further, the motor driving device includes: the device comprises a power battery, a motor gear and a gear ring; the power battery is connected with the motor; the motor gear is fixedly arranged at the output end of the motor; the motor gear is meshed with the gear ring; the gear ring is selectively connected with the first combination gear or the sun gear device through the first synchronizer, and the gear ring is connected with the planetary reduction device and the transmission shaft device.
Further, the ring gear includes: the gear comprises a first gear, a ring gear shaft, a first bevel gear and an inner gear ring; the first gear, the first bevel gear and the inner gear ring are fixedly arranged on the gear ring shaft; the first gear is meshed with the motor gear; the first bevel gear is connected with the transmission shaft device; the inner gear ring is connected with the planetary reduction gear; the ring gear shaft is selectively connectable with the first coupling tooth or the sun gear means through the first synchronizer.
Further, the planetary reduction device includes: planet carrier and planet wheel; the planet carrier can be connected with the engine driving device, and the planet wheel is sleeved on the planet carrier.
Further, the sun gear apparatus includes: the sun gear shaft, the sun gear, the second combination tooth and the third combination tooth; the sun gear, the second combining teeth and the third combining teeth are fixedly arranged on the sun gear shaft; the sun gear is connected with the planetary reduction gear; the second coupling tooth may be coupled with the first synchronizer; the third coupling tooth may be connected to the intermediate shaft device.
Further, the intermediate shaft device includes: the intermediate shaft, the second synchronizer and the second gear; the intermediate shaft can be connected with the sun gear device through a second synchronizer; the second gear is fixedly arranged on the intermediate shaft; the second gear is connected with the front wheel.
Further, the transmission shaft device includes: the first transmission shaft, the second clutch, the second bevel gear and the third bevel gear; the second bevel gear is fixedly arranged at the first end of the first transmission shaft and is connected with the motor driving device; the second end of the first transmission shaft can be connected with the first end of the second transmission shaft through the second clutch; the third bevel gear is fixedly arranged on the second transmission shaft and connected with the rear wheel.
Further, the power transmission system further includes: a front axle differential assembly and a rear axle differential assembly; the intermediate shaft device is connected with the front wheels through the front axle differential mechanism assembly, and the transmission shaft device is connected with the rear wheels through the rear axle differential mechanism assembly.
Based on the same inventive concept, the application also provides a vehicle comprising the power transmission system.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
because the first combination gear is fixedly arranged on the frame, the engine driving device can be connected with the planetary reduction gear, the planetary reduction gear is connected with the sun gear device, the sun gear device can be connected with the intermediate shaft device, the intermediate shaft device is connected with the front wheel, the motor driving device can be selectively connected with the first combination gear or the sun gear device through the first synchronizer, the planetary reduction gear and the motor driving device are both connected with the transmission shaft device, and the transmission shaft device can be connected with the rear wheel, so when the vehicle needs to realize the first forward gear, the transmission shaft device is not connected with the rear wheel, the sun gear device can be connected with the intermediate shaft device, the motor driving device is combined with the first combination gear through the first synchronizer to realize the locking of the motor driving device, the power of the engine driving device is transmitted to the sun gear device through the planetary reduction gear, the sun gear device transmits the power to the front wheel through the intermediate shaft device, when the vehicle needs to realize the second forward gear, the transmission shaft device is not connected with the rear wheel, the engine driving device is not connected with the planetary reduction gear, the motor driving device is combined with the sun gear device through the first synchronizer, the sun gear device is connected with the intermediate shaft device, the power of the motor driving device is transmitted to the sun gear device through the first synchronizer, the sun gear device transmits the power to the front wheel through the intermediate shaft device, the engine driving device is connected with the planetary reduction gear, the power of the engine driving device is transmitted to the sun gear device through the intermediate shaft device, the power of the motor driving device is transmitted to the front wheel through the intermediate shaft device, the parallel connection of the power of the engine driving device and the power of the motor driving device is realized, the torque is increased, the power is improved, and when the vehicle needs to realize the rear drive, the sun gear device is not connected with the intermediate shaft device, the transmission shaft device is connected with the rear wheel, the engine driving device is connected with the planetary reduction gear, the power of the engine driving device is transmitted to the transmission shaft device through the planetary reduction gear, the transmission shaft device transmits the power to the rear wheel, meanwhile, the motor driving device is combined with the sun gear device through the first synchronizer, the motor driving device is unlocked, the power of the motor driving device is transmitted to the rear wheel through the transmission shaft device, the rear wheel acts, when the vehicle needs to realize four driving, the sun gear device is connected with the intermediate shaft device, the transmission shaft device is connected with the rear wheel, the motor driving device is combined with the sun gear device through the first synchronizer, the power of the engine driving device is transmitted to the sun gear device and the transmission shaft device through the planetary reduction gear, the sun gear device transmits the power to the front wheel through the intermediate shaft device, the power of the motor driving device is transmitted to the sun gear device and the transmission shaft device, the power of the sun gear device is transmitted to the front wheel through the intermediate shaft device, the front wheel and the rear wheel acts, the front wheel and the rear wheel can realize driving and four driving independently, and the rear driving can be realized in a driving mode, and the operation is simple, and simple and convenient.
Drawings
FIG. 1 is a schematic diagram of a powertrain system according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of the configuration of a ring gear of the powertrain of FIG. 1;
FIG. 3 is a schematic illustration of the sun gear arrangement of the powertrain of FIG. 1;
FIG. 4 is a schematic illustration of the configuration of the intermediate shaft assembly of the powertrain of FIG. 1;
FIG. 5 is a schematic illustration of a drive shaft assembly of the powertrain of FIG. 1;
FIG. 6 is a schematic illustration of the front axle differential assembly of the powertrain of FIG. 1;
FIG. 7 is a schematic illustration of the rear axle differential assembly of the powertrain of FIG. 1.
Detailed Description
Referring to fig. 1, a power transmission system according to an embodiment of the present invention includes: the engine driving device 1, the motor driving device 2, the planetary reduction device 3, the first coupling gear 4, the first synchronizer 5, the sun gear device 6, the intermediate shaft device 7, the front wheel 8, the transmission shaft device 9 and the rear wheel 10.
The first coupling tooth 4 is fixedly arranged on the frame.
The engine drive 1 may be connected to a planetary reduction device 3, and the planetary reduction device 3 is connected to a sun gear device 6.
The sun gear means 6 may be connected to intermediate shaft means 7, the intermediate shaft means 7 being connected to the front wheel 8.
The motor drive 2 can be selectively connected to the first coupling tooth 4 or the sun gear means 6 via a first synchronizer 5.
The planetary reduction device 3 and the motor driving device 2 are connected with a transmission shaft device 9.
The propeller shaft means 9 may be connected to the rear wheel 10.
In the specific embodiment of the application, as the first combining gear 4 is fixedly arranged on the frame, the engine driving device 1 can be connected with the planetary reduction gear 3, the planetary reduction gear 3 is connected with the sun gear device 6, the sun gear device 6 can be connected with the intermediate shaft device 7, the intermediate shaft device 7 is connected with the front wheel 8, the motor driving device 2 can be selectively connected with the first combining gear 4 or the sun gear device 6 through the first synchronizer 5, the planetary reduction gear 3 and the motor driving device 2 are both connected with the transmission shaft device 9, the transmission shaft device 9 can be connected with the rear wheel 10, so when the vehicle needs to realize a first forward gear, the transmission shaft device 9 is not connected with the rear wheel 10, the sun gear device 6 is connected with the intermediate shaft device 7, the motor driving device 2 is combined with the first combining gear 4 through the first synchronizer 5, the power transmission device 2 is locked with the intermediate shaft device 7, the power of the engine driving device 1 is transmitted to the sun gear device 6 through the planetary reduction gear device 3, the power of the sun gear device 6 is transmitted to the sun gear device 6 through the intermediate shaft device 7, the front wheel 8 acts, when the vehicle needs to realize a second forward gear, the transmission shaft device 9 is not connected with the rear wheel 6 and the motor driving device 6 is connected with the sun gear device 6 through the intermediate shaft device 6, the motor driving device 6 is connected with the sun gear device 6 through the sun gear device 6, the power transmission device 1 is connected with the sun gear device 6 through the intermediate shaft device 6, the power 1 is connected with the sun gear device 1 through the sun gear device 6, and the power 1 is connected with the power device 1 through the sun gear device 6, when the power is connected with the power 1 through the sun gear device 3, the power 1 is connected with the power 1 through the power 1, and the power is connected with the power 1 through the power device 3, and the power is connected with the power 1 through the power device 5, the sun gear device 6 transmits power to the front wheel 8 through the intermediate shaft device 7, the parallel connection of the power of the motor driving device 2 and the power of the engine driving device 1 is realized, the torque is increased, the power is improved, the front wheel works, when the vehicle needs to realize rear driving, the sun gear device 6 is not connected with the intermediate shaft device 7, the transmission shaft device 9 is connected with the rear wheel 10, the engine driving device 1 is connected with the planetary reduction device 3, the power of the engine driving device 1 is transmitted to the transmission shaft device 9 through the planetary reduction device 3, the transmission shaft device 9 transmits the power to the rear wheel 10, meanwhile, the motor driving device 2 is combined with the sun gear device 6 through the first synchronizer 5, the motor driving device 2 is unlocked, the power of the motor driving device 2 is transmitted to the rear wheel 10 through the transmission shaft device 9, the rear wheel 10 works, when the vehicle needs to realize four-wheel driving, the sun gear device 6 is connected with the intermediate shaft device 7, the transmission shaft device 9 is connected with the rear wheel 10, the motor driving device 2 is combined with the sun gear device 6 through the first synchronizer 5, the power of the engine driving device 1 is respectively transmitted to the sun gear device 6 and the transmission shaft device 9 through the planetary reduction device 3, the sun gear device 6 transmits the power to the front wheel 8 through the intermediate shaft device 7, the transmission shaft device 9 transmits the power to the rear wheel 10, meanwhile, the power of the motor driving device 2 is respectively transmitted to the sun gear device 6 and the transmission shaft device 9, the sun gear device 6 transmits the power to the front wheel 8 through the intermediate shaft device 7, the transmission shaft device 9 transmits the power to the rear wheel 10, the front wheel 8 and the rear wheel 10 are all operated, the front wheel, the rear wheel and the four wheels can be independently driven, the switching of driving modes can be realized in the operation process, and the structure is simple and the operation is convenient.
Specifically, the engine driving device 1 includes: an engine 1-1 and a first clutch 1-2.
The engine 1-1 can be connected with the planetary reduction device 3 through the first clutch 1-2, and whether the power of the engine 1-2 is transmitted to the planetary reduction device 3 or not is controlled through the first clutch 1-2.
Specifically, the motor drive device 2 includes: 2-1 of power battery, 2-2 of motor, 2-3 of motor gear and 2-4 of gear ring.
The power battery 2-1 is connected with the motor 2-2.
The motor gear 2-3 is fixedly arranged at the output end of the motor 2-2.
The motor gear 2-3 is meshed with the gear ring 2-4.
The ring gear 2-4 is selectively connectable with the first coupling tooth 4 or the sun gear means 6 via a first synchronizer 5, the ring gear 2-4 being connected with the planetary reduction 3 and with the transmission shaft means 9.
Referring to fig. 2, the ring gears 2 to 4 include: the gear comprises a first gear 2-41, a gear ring shaft 2-42, a first bevel gear 2-43 and an inner gear ring 2-44.
The first gear 2-41, the first bevel gear 2-43 and the inner gear ring 2-44 are fixedly arranged on the gear ring shaft 2-42.
The first gear 2-41 is meshed with the motor gear 2-3.
The first bevel gears 2-43 are connected to the drive shaft means 9.
The inner gear ring 2-44 is connected with the planetary reduction gear 2-44.
The ring gear shafts 2 to 42 are selectively connectable with the first coupling teeth 4 or the sun gear means 6 via the first synchronizer 5.
In this embodiment, the power battery 2-1 transmits electric power to the motor 2-2 to realize the motion of the motor 2-2, the output end of the motor 2-2 drives the motor gear 2-3 to move, the motor gear 2-3 drives the first gear 2-41 to move, the first gear 2-41 drives the ring gear shaft 2-42 to rotate, the ring gear shaft 2-42 drives the first bevel gear 2-43 and the ring gear 2-44 to move respectively, the first bevel gear 2-43 transmits power to the transmission shaft device 9, and the ring gear 2-44 transmits power to the planetary reduction device 2-44.
Specifically, the planetary reduction device 3 includes: the planet carrier 3-1 and the planet wheels 3-2.
The planet carrier 3-1 can be connected with the engine driving device 1, and the planet wheel 3-2 is sleeved on the planet carrier 3-1. In the present embodiment, the planetary gear 3-2 is sleeved on the planetary gear carrier 3-1, and the planetary gear 3-2 can only rotate along the axial direction thereof. Wherein the planet wheel 3-2 is meshed with the inner gear ring 2-44.
In the present embodiment, the engine 1-1 of the engine driving device 1 can transmit power to the carrier 3-1 through the first clutch 1-2, the carrier 3-1 transmits power to the planetary gears 3-2, and the planetary gears 3-2 are connected to the sun gear device 6, so that power can be transmitted to the sun gear device 6.
Referring to fig. 3, the sun gear device 6 includes: sun gear shaft 6-1, sun gear 6-2, second coupling tooth 6-3 and third coupling tooth 6-4.
The sun gear 6-2, the second coupling tooth 6-3 and the third coupling tooth 6-4 are all fixedly arranged on the sun gear shaft 6-1.
The sun gear 6-2 is connected with the planetary reduction gear 3. In the present embodiment, the sun gear 6-2 meshes with the planetary gear 3-2 of the planetary reduction gear 3.
The second coupling tooth 6-3 can be coupled with the first synchronizer 5.
The third coupling tooth 6-4 can be connected with the intermediate shaft device 7.
In the present embodiment 1, the power of the planetary gear 3-2 of the planetary reduction device 3 is transmitted to the sun gear 6-2, the sun gear 6-2 drives the sun gear shaft 6-1 to operate, and the sun gear shaft 6-1 drives the second coupling teeth 6-3 and the third coupling teeth 6-4 to operate. When the second coupling teeth 6-3 are coupled with the first synchronizer 5, the ring gear shaft 2-42 of the motor drive 2 transmits power to the second coupling teeth 6-3 through the first synchronizer 5, and the second coupling teeth 6-3 transmit power to the sun gear shaft 6-1.
Referring to fig. 4, the intermediate shaft device 7 includes: intermediate shaft 7-1, second synchronizer 7-2 and second gear 7-3.
The intermediate shaft 7-1 can be connected to the sun gear arrangement 6 via a second synchronizer 7-2.
The second gear 7-3 is fixedly arranged on the intermediate shaft 7-1.
The second gear 7-3 is connected to the front wheel 8.
When the front drive or the four-drive is carried out, the intermediate shaft 7-1 is connected with the third combining teeth 6-4 of the sun gear device 6 through the second synchronizer 7-2, the power on the sun gear shaft 6-1 is transmitted to the second synchronizer 7-2 through the third combining teeth 6-4, the power is transmitted to the intermediate shaft 7-1 through the second synchronizer 7-2, and the intermediate shaft 7-1 transmits the power to the front wheel 8 through the second gear 7-3. When the rear drive is performed, the intermediate shaft 7-1 is no longer connected to the third coupling tooth 6-4 of the sun gear means 6 via the second synchronizer 7-2.
Referring to fig. 5, the propeller shaft apparatus 9 includes: a first transmission shaft 9-1, a second transmission shaft 9-2, a second clutch 9-3, a second bevel gear 9-4 and a third bevel gear 9-5.
The second bevel gear 9-4 is fixedly arranged at the first end of the first transmission shaft 9-1, and the second bevel gear 9-4 is connected with the motor driving device 2. In the present embodiment, the second bevel gear 9-4 is engaged with the first bevel gear 2-43 of the motor drive 2.
The second end of the first transmission shaft 9-1 is connectable with the first end of the second transmission shaft 9-2 via a second clutch 9-3. In the present embodiment, whether or not the power of the first transmission shaft 9-1 is transmitted to the second transmission shaft 9-2 is controlled by the second clutch 9-3.
The third bevel gear 9-5 is fixedly arranged on the second transmission shaft 9-2, and the third bevel gear 9-5 is connected with the rear wheel 10.
In this embodiment, when the rear drive or the four-wheel drive is performed, the second bevel gear 9-4 transmits power to the first transmission shaft 9-1, the second end of the first transmission shaft 9-1 is connected to the first end of the second transmission shaft 9-2 through the second clutch 9-3, the first transmission shaft 9-1 transmits power to the second transmission shaft 9-2 through the second clutch 9-3, the second transmission shaft 9-2 drives the third bevel gear 9-5 to rotate, and the third bevel gear 9-5 transmits power to the rear wheel 10. When the precursor is being driven, the second end of the first drive shaft 9-1 is disconnected from the first end of the second drive shaft 9-2 by the second clutch 9-3, and the first drive shaft 9-1 no longer transmits power to the second drive shaft 9-2.
Referring to fig. 6-7, the drivetrain further includes: front axle differential assembly 11 and rear axle differential assembly 12.
The intermediate shaft device 7 is connected to the front wheels 8 via a front axle differential assembly 11.
The front axle differential assembly 11 includes: the first differential ring gear 11-1 and the first differential 11-2.
The first differential gear ring 11-1 is meshed with the second gear 7-3 of the intermediate shaft device 7, the first differential gear ring 11-1 is connected with the first differential gear 11-2, and the first differential gear 11-2 is connected with the front wheels 8.
In the present embodiment, the second gear 7-3 of the intermediate shaft device 7 transmits power to the first differential ring gear 11-1 and through the first differential 11-2. Is transmitted to the front wheel 8 to drive the front wheel 8 to operate.
The propeller shaft assembly 9 is connected to the rear wheels 10 via a rear axle differential assembly 12.
The front axle differential assembly 12 includes: the second differential ring gear 12-1 and the second differential 12-2.
The second differential gear ring 12-1 is meshed with the third bevel gear 9-5 of the propeller shaft apparatus 9, the second differential gear ring 12-1 is connected with the second differential gear 12-2, and the second differential gear 12-2 is connected with the front wheels 8.
In the present embodiment, the third bevel gear 9-5 of the propeller shaft apparatus 9 transmits power to the second differential ring gear 12-1 and through the second differential 12-2. Is transmitted to the rear wheel 10 to drive the rear wheel 10 to operate.
In some embodiments, when the vehicle needs to achieve a forward first gear.
The second end of the first transmission shaft 9-1 can be disconnected with the first end of the second transmission shaft 9-2 through the second clutch 9-3, the intermediate shaft 7-1 is connected with the third combining teeth 6-4 through the second synchronizer 7-2, the gear ring shaft 2-42 is combined with the first combining teeth 4 through the first synchronizer 5, locking of the motor driving device 2 is achieved, and the engine 1-1 is connected with the planet carrier 3-1 through the first clutch 1-2.
The power generated by the engine 1-1 is transmitted to the front wheel 8 through the first clutch 1-2, the planet carrier 3-1, the planet wheel 3-2, the sun wheel 6-2, the sun wheel shaft 6-1, the third combined tooth 6-4, the second synchronizer 7-2, the intermediate shaft 7-1, the second gear 7-3, the first differential gear ring 11-1 and the first differential gear 11-2 in sequence, and the front wheel 8 acts, so that the front wheel 8 can be driven independently.
In some embodiments, when the vehicle needs to achieve a second forward gear.
The second end of the first transmission shaft 9-1 is disconnected from the first end of the second transmission shaft 9-2 by the second clutch 9-3, the intermediate shaft 7-1 is connected with the third coupling teeth 6-4 by the second synchronizer 7-2, the engine 1-1 is disconnected from the planet carrier 3-1 by the first clutch 1-2, and the ring gear shaft 2-42 is coupled with the second coupling teeth 6-3 by the first synchronizer 5.
The power of the output end of the motor 2-2 is transmitted to the front wheel 8 through the motor gear 2-3, the first gear 2-41, the gear ring shaft 2-42, the first synchronizer 5, the second coupling tooth 6-3, the sun gear shaft 6-1, the third coupling tooth 6-4, the second synchronizer 7-2, the intermediate shaft 7-1, the second gear 7-3, the first differential gear ring 11-1 and the first differential 11-2 in sequence. At this time, the engine 1-1 is connected with the planet carrier 3-1 through the first clutch 1-2, the power generated by the engine 1-1 sequentially passes through the first clutch 1-2, the planet carrier 3-1, the planet wheel 3-2, the sun gear 6-2, the sun gear shaft 6-1, the third combining teeth 6-4, the second synchronizer 7-2, the intermediate shaft 7-1, the second gear 7-3, the first differential gear 11-1 and the first differential gear 11-2 to be transmitted to the front wheel 8, the front wheel 8 acts, the parallel connection of the power of the motor driving device 2 and the power of the engine driving device 1 is realized, the torque is increased, the power is improved, the front wheel 8 acts, and the front wheel can be independently driven.
In some embodiments, when the vehicle needs to achieve a rear drive.
The intermediate shaft 7-1 is disconnected from the third engaging tooth 6-4 through the second synchronizer 7-2, the second end of the first transmission shaft 9-1 is connected with the first end of the second transmission shaft 9-2 through the second clutch 9-3, the engine 1-1 is connected with the planet carrier 3-1 through the first clutch 1-2, the gear ring shaft 2-42 is engaged with the second engaging tooth 6-3 through the first synchronizer 5, and the motor driving device 2 is unlocked.
The power generated by the engine 1-1 is sequentially transmitted to the first bevel gear 2-43 through the first clutch 1-2, the planet carrier 3-1, the planet gears 3-2 and the inner gear ring 2-44, the power at the output end of the motor 2-2 is sequentially transmitted to the first bevel gear 2-43 through the motor gear 2-3, the first gear 2-41 and the gear ring shaft 2-42, the first bevel gear 2-43 sequentially transmits the power to the third bevel gear 9-5 through the second bevel gear 9-4, the first transmission shaft 9-1, the second clutch 9-3 and the second transmission shaft 9-2, the third bevel gear 9-5 transmits the power to the second differential 12-2 through the second differential gear ring 12-1, the second differential 12-2 transmits the power to the rear wheel 10, and the rear wheel 10 acts, so that the rear drive can be independently realized.
In some embodiments, when the vehicle needs to achieve a four-wheel drive.
The intermediate shaft 7-1 is connected with the third engaging teeth 6-4 through the second synchronizer 7-2, the second end of the first transmission shaft 9-1 is connected with the first end of the second transmission shaft 9-2 through the second clutch 9-3, the ring gear shaft 2-42 is engaged with the second engaging teeth 6-3 through the first synchronizer 5, and the engine 1-1 is connected with the carrier 3-1 through the first clutch 1-2.
Part of the power generated by the engine 1-1 is transmitted to the front wheel 8 through the first clutch 1-2, the planet carrier 3-1, the planet wheel 3-2, the sun wheel 6-2, the sun wheel shaft 6-1, the third combining tooth 6-4, the second synchronizer 7-2, the intermediate shaft 7-1, the second gear 7-3, the first differential gear ring 11-1 and the first differential gear 11-2 in sequence, and the front wheel 8 acts. Meanwhile, another part of the power generated by the engine 1-1 is transmitted to the first bevel gear 2-43 through the first clutch 1-2, the planet carrier 3-1, the planet gears 3-2 and the inner gear ring 2-44 in sequence.
The power of a part of the output end of the motor 2-2 is transmitted to the front wheel 8, and the front wheel 8 acts through the motor gear 2-3, the first gear 2-41, the gear ring shaft 2-42, the first synchronizer 5, the second combined gear 6-3, the sun gear shaft 6-1, the third combined gear 6-4, the second synchronizer 7-2, the intermediate shaft 7-1, the second gear 7-3, the first differential gear ring 11-1 and the first differential 11-2 in sequence. Meanwhile, the power of the other part of the output end of the motor 2-2 is transmitted to the first bevel gear 2-43 through the motor gear 2-3, the first gear 2-41 and the gear ring shaft 2-42 in sequence.
The first bevel gear 2-43 transmits power to the third bevel gear 9-5 through the second bevel gear 9-4, the first transmission shaft 9-1, the second clutch 9-3 and the second transmission shaft 9-2 in sequence, the third bevel gear 9-5 transmits power to the second differential mechanism 12-2 through the second differential mechanism gear ring 12-1, the second differential mechanism 12-2 transmits power to the rear wheel 10, the rear wheel 10 acts, the front wheel 8 and the rear wheel 10 act, four-wheel driving can be independently realized, switching of driving modes can be realized in the running process, and the device is simple in structure and easy and convenient to operate.
Meanwhile, in the present embodiment, the moduli of the planetary gear 3-2, the sun gear 6-2 and the ring gear 2-44 are the same, the moduli of the first bevel gear 2-43 and the second bevel gear 9-4 are the same, the moduli of the third bevel gear 9-5 and the second differential ring gear 12-1 are the same, the moduli of the motor gear 2-3 and the first gear 2-41 are the same, and the moduli of the second gear 7-3 and the first differential ring gear 11-1 are the same. To ensure that the rotational speeds of the front wheel 8 and the rear wheel 10 are the same during four-wheel drive, the transmission ratio i of the front wheel 8 should be ensured 1 Equal to the transmission ratio i of the rear wheel 10 2 。i 1 ＝(Z 2-43 /Z 9-4 )*(Z 9-5 /Z 12-1 ),Z 2-43 For the modulus, Z, of the first bevel gear 2-43 9-4 Modulus, Z, of the second bevel gear 9-4 9-5 Modulus, Z, of the third bevel gear 9-5 12-1 Modulus, i, of the second differential ring gear 12-1 2 ＝i 7-3 /i 11-1 ，i 7-3 I is the transmission ratio of the second gear 7-3 11-1 Is the transmission ratio of the first differential ring gear 11-1.
The precursor mode is converted into a postdrive mode: only in the second gear of the front drive, i 1 ＝i 2 So that in the second gear of the precursor, the rotational speed of the first transmission shaft 9-1 is constantly equal to the rotational speed of the second transmission shaft 9-2. Thus, the second clutch 9-3 is directly engaged, and then the second synchronizer 7-2 is disconnected from the third coupling tooth 6-4, so that the rear drive can be realized.
The precursor mode is changed to the four-drive mode: only in the second gear of the front drive, i 1 ＝i 2 So that in the second gear of the precursor, the rotational speed of the first transmission shaft 9-1 is constantly equal to the rotational speed of the second transmission shaft 9-2. Thus, the second clutch 9-3 is directly engaged, and four-wheel drive is achieved.
The backdriving mode is converted into a precursor mode: because of i 1 ＝i 2 So that the rotational speed of the sun gear shaft 6-1 is constantly equal to the rotational speed of the intermediate shaft 7-1 at the time of the rear drive. Therefore, the second synchronizer 7-2 is directly engaged with the third engaging tooth 6-4, and then the second clutch 9-3 is disengaged, so that the precursor is realized, and the precursor second gear is realized.
The rear drive mode is changed to the four-drive mode: because of i 1 ＝i 2 So that the rotational speed of the sun gear shaft 6-1 is constantly equal to the rotational speed of the intermediate shaft 7-1 at the time of the rear drive. Therefore, the second synchronizer 7-2 and the third engaging tooth 6-4 are directly engaged, so that four-wheel drive can be realized.
The four-drive mode is changed into a precursor mode: the second clutch 9-3 is disengaged to achieve the first, and in this case the first gear.
The four-drive mode is changed into the rear-drive mode: the second synchronizer 7-2 and the third combination gear 6-4 are disconnected, and the back drive can be realized.
The invention also provides a vehicle, the vehicle adopts the power transmission system, the specific structure of the power transmission system refers to the embodiment, and the power transmission system adopts all the technical schemes of all the embodiments, so that the vehicle at least has all the beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated here.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.

Claims (9)

1. A drivetrain, comprising: the device comprises an engine driving device, a motor driving device, a planetary reduction device, a first combination gear, a first synchronizer, a sun gear device, a middle shaft device, a front wheel, a transmission shaft device and a rear wheel;
the first combining teeth are fixedly arranged on the frame;
the engine driving device can be connected with the planetary reduction device, and the planetary reduction device is connected with the sun gear device;
the sun gear device can be connected with the intermediate shaft device, and the intermediate shaft device is connected with the front wheel;
the motor driving device can be selectively connected with the first combining tooth or the sun gear device through the first synchronizer;
the planetary reduction device and the motor driving device are connected with the transmission shaft device;
the transmission shaft device can be connected with the rear wheel;
the motor driving device includes: the device comprises a power battery, a motor gear and a gear ring;
the power battery is connected with the motor;
the motor gear is fixedly arranged at the output end of the motor;
the motor gear is meshed with the gear ring;
the gear ring is selectively connected with the first combination gear or the sun gear device through the first synchronizer, and the gear ring is connected with the planetary reduction device and the transmission shaft device.
2. The powertrain system of claim 1, wherein the engine drive means comprises: an engine and a first clutch;
the engine is connectable with the planetary reduction device through the first clutch.
3. The powertrain system of claim 1, wherein the ring gear comprises: the gear comprises a first gear, a ring gear shaft, a first bevel gear and an inner gear ring;
the first gear, the first bevel gear and the inner gear ring are fixedly arranged on the gear ring shaft;
the first gear is meshed with the motor gear;
the first bevel gear is connected with the transmission shaft device;
the inner gear ring is connected with the planetary reduction gear;
the ring gear shaft is selectively connectable with the first coupling tooth or the sun gear means through the first synchronizer.
4. The powertrain system of claim 1, wherein the planetary reduction device includes: planet carrier and planet wheel;
the planet carrier can be connected with the engine driving device, and the planet wheel is sleeved on the planet carrier.
5. The drivetrain of claim 1, wherein the sun gear means comprises: the sun gear shaft, the sun gear, the second combination tooth and the third combination tooth;
the sun gear, the second combining teeth and the third combining teeth are fixedly arranged on the sun gear shaft;
the sun gear is connected with the planetary reduction gear;
the second coupling tooth may be coupled with the first synchronizer;
the third coupling tooth may be connected to the intermediate shaft device.
6. The drivetrain of claim 1, wherein the intermediate shaft arrangement comprises: the intermediate shaft, the second synchronizer and the second gear;
the intermediate shaft can be connected with the sun gear device through a second synchronizer;
the second gear is fixedly arranged on the intermediate shaft;
the second gear is connected with the front wheel.
7. The drivetrain of claim 1, wherein the drive shaft means comprises: the first transmission shaft, the second clutch, the second bevel gear and the third bevel gear;
the second bevel gear is fixedly arranged at the first end of the first transmission shaft and is connected with the motor driving device;
the second end of the first transmission shaft can be connected with the first end of the second transmission shaft through the second clutch;
the third bevel gear is fixedly arranged on the second transmission shaft and connected with the rear wheel.
8. The powertrain system of claim 1, further comprising: a front axle differential assembly and a rear axle differential assembly;
the intermediate shaft device is connected with the front wheels through the front axle differential mechanism assembly
The transmission shaft device is connected with the rear wheels through the rear axle differential mechanism assembly.
9. A vehicle comprising a drivetrain according to any one of claims 1-8.
CN202110963632.8A 2021-08-20 2021-08-20 Power transmission system and vehicle Active CN113815407B (en)

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